Apparatus for insulating.



B/L MEIRGWSKY.

APPARATUS POR INSULATING.

APLIOATION FILED 001219, 1910.

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MAX MEIROWSKY, OF COLOGNE-EHRENTFELD. GERMANY.

APPARATUS non. INsUnATING.

specificati@ #Letters raient. rammed Apr. is, 1911.

Application filed October 19, 1910. Serial No. 587,933.

To @ZZ lwhom. t may concern Be it known that I, MAX Mnlnowsiiv, a subject ofthe King of Prussia,-German Emperor, residing at Cologne-Ehrenfeld, in the Province of the Rhine, Kingdom of Prussia, GermanEmpii-e, have invented certain Inew and vuseful Improved Apparatus for lnsulat ing, of which the following is a specification.

This invention relates to an apparatus for the production of a stratified insulating cas ing or tube and part-icularlyto an apparatus for the insulation of formwound armature coils by mica or like insulating material.

According to my invention the body to be insulated (armature coil, armature bar or the like) is set in revolution so as to wind on the insulating material. It, thereby. imparts movement also to' an endless band hung .around it and kept in tension so that the insulating material introduced between the band and the core to be insulated is uniformly pressed on whatever the cross section ofthe core, and defoliation is prevented. If in this process, .as is necessary when mica or micanite plates are used, the insulating material is heated by hot rolls, then according to the invention the endless band surrounds these hot rolls also which are thus set in rotation, and a point of entry for the insulating material can be provided between the rolls and the core where these come closest together. v

The apparatus is described more particularly with reference to the accompanying drawings in which one form of construction of the device is illustra-ted.

Figure l shows diagrammatically,how a core l; of rectangular cross section, for ex ample one of the long sides of a formwound armature coil, is provided with an insulating sheath according to the process described; The endless band atensioned by al weight c essential.

is so wound over the core and the loosely arranged hot rolls ,(Z (2'. e. the rolls are not provided with bearings) that a point of entry is formed for the plates or band of insulating material z' coming from the drum The rolls d, (Z are connected together by the arch m and may carry vupon a lever h a weight o which in conjunction with the weight c maintains the whole system in equilibrium. The weight c, however, is not Also in a suitable construction the drum 7c could. be formed as a Weight. If the core -b'is set in rotation in known man- =and in what manner nerthe band (l, tensioned by the weight c travels around' and through friction turns the rolls d, Z so that the insulating material z' is wound on. with uniform pressure being heated before it reaches the core. Anysplitting off of the mica or the like is prevented since it is immediatelypressed against the core or the preceding layer. Since the core. serves to supportthe whole winding device this can be adapted to any desired cross action of core by a suitable adjustment of the weight c suspended on belt a which maintains vthe constant uniform pressure. The endless belt a is preferably tensioned as shown by means of a weight c but the,

tension can he applied by springs or the like. Further by applying thetension exerted by the weight, spring or the like in the proper direction, the endless band need not be left hanging down but can extend horizontally or in any desireddrection.

Fig. 2 indicates hn a smaller scale how the device can be used\for insulating an armature coil. The coil which one of the long sides b is to be wound is secured by-means of the chucks f, 7 to a\rotating shaft in such a way that the long axis of the coil side coincides with that of the*l` shaft, The whole winding, device is kept in the upright position by the weightc while the side of the coil which is not being wound rotates around the device. Then an object of ring forni is being insulated, as for example this armature coil. the belt a can obviously only be tensioned by means of a weight.

Having n ow particularly Adescribed and disclosed the nature of my said invention the sameds to be performed, what I claim is '1. Apparatus for the class described, comprising a rotatable core, and an endless vband engaging said core and adapted to. exert pressure. on the core to apply insulating material thereto.

2. Apparatus of the class described, comprising a `rotatable core, heating rolls` and an endless band engaging said core and said rolls for the purpose described.

3. Apparatus of the class described, comprising a rotatable core, heating rolls, means for feeding insulating material between said core and said rolls, andan endless band engaging the core and the rolls for the purpose described.

4f. Apparatus of the class described, com

prising a rotatable core, loosely mounted heating rolls, and an endless band engaging the core and the rolls.

5. Apparatus of the class described, comprising a rotatable core, heating rolls, an

lendless band engaging said core and said ollsi, and means-for applying tension to said 6. Apparatus of the class described; comprising a4 rotatable core, heating rolls, an endless band engaging said core-and rolls, means-for connecting the rolls, and' means for maintaining equilibrium of the apparatus. y

-17. Apparatus of the class described, com- 9893er p prising a rotatablecore, heating rolls adjacent to the core, an endless band engaging the core and the rolls for applying insulating material to the eo're, means for applying tension to the band, and means for. supplying MAX MEIROWSKY.

Witnesses Amas VANDORN, Bassin T. DUNLAP. 

